I really want to try getting started with Tumblr, so I got iMacro..

However when I used iMacro it seemed like.. scam-ish? I'm not sure how to describe it. Chrome said they would have access to all of my data and things like that, so I got fearful of my bank account and paypal being hijacked. Is this possible?

The extension is called: iMacro for Chrome

It made me wary because I saw the black-hat-esque landing page and they said they'd have access to all my data.

Is there any other way I can get started in Chrome without having to use this? I need a way to autoblog/like/follow.